Gemini 3.1 Flash Image supports hosted image generation, multi-turn editing and revisions guided by several reference images. Flexible resolutions and search grounding make it worth considering for permitted game assets, but Google now recommends Nano Banana 2.1 for new projects. Its S tier covers permitted asset work. Compare this model with the Pro image model on difficult poses and outfit continuity before choosing it for a character pipeline. Check identity and transparency at export, and keep the exact API model ID, references and prompt revisions in the production record. Generated images carry SynthID; Google’s policy restricts sexually explicit material.
Commercial use & license
Google’s Gemini API or service terms apply, without a grant of local model weights. Review rights to inputs and intended uses of outputs separately.
Adult content rules
Google’s policy restricts sexually explicit content, including material created for pornography or sexual gratification.
What you need
An account or API access, rights to submitted references, and a reviewed export workflow.
Ranks are recommendations for the task described, based on reviewed documentation. Model ranks cover non-explicit development work. We have not run practical benchmarks. Check content policies and commercial terms separately. How the ranks work →
Sources & further reading +
Last checked 5 October 2026.